Nullpointer exceptions when posting a form. This happens sporadically
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I get nullpointerexceptions when posting forms on the webmanager controller servlet. This happens at random and it can happen on any form model. Any idea how this is possible?, please take a look at stack trace below. I am really at wit's end, any help would be appreciated.
thanks in advance.
INFO: Using formdefinition url'http://localhost:8080/web/show/handlerconfig?id=40479&frontendrequest=true&secure=false&formelement=13345776&ff=13345776&secure=false&pageid=13345603&ff=13345776&element=13345817&langid=43' 10:44:56,579 ERROR [ContainerBase] Servlet.service() for servlet ControllerServlet threw exception java.lang.NullPointerException at nl.gx.webmanager.servlet.ControllerServlet.handleConfigRequest(ControllerServlet.java:893) at nl.gx.webmanager.servlet.ControllerServlet.doService(ControllerServlet.java:218) at nl.gx.webmanager.servlet.ControllerServlet.service(ControllerServlet.java:117) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.webmanager.servlet.PathInfoFilter.doFilter(PathInfoFilter.java:72) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.filter.access.AccessValveFilter.doFilter(AccessValveFilter.java:139) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.filter.RequestLogger.doFilter(RequestLogger.java:113) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:687) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:364) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) at nl.gx.webmanager.servlet.InterceptFilter.doFilter(InterceptFilter.java:84) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.webmanager.handler.servlet.FriendlyURLFilter.doFilter(FriendlyURLFilter.java:140) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.snsbank.filter.NormalizeFriendlyUrlFilter.doFilter(NormalizeFriendlyUrlFilter.java:68) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.webmanager.handler.servlet.SessionSecurityFilter.doFilter(SessionSecurityFilter.java:179) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.webmanager.handler.servlet.SecurityFilter.doFilter(SecurityFilter.java:71) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.filter.signing.SecureFormsSigningFilter.doFilter(SecureFormsSigningFilter.java:116) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at nl.gx.webmanager.servlet.DefaultEncodingFilter.doFilter(DefaultEncodingFilter.java:90) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:393) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619)
I found out what was wrong with our site. It turns out one of our handlers was not thread safe. So guys, make sure when writing handlers, that they are thread safe. These bugs are the hardest to find but easy to fix
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February 07, 10:55
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